@inproceedings{4238e685414a46dba660498d06a336f5,
title = "All-digital PPM impulse radio for multiple-access through frequency-selective multipath",
abstract = "Impulse radio (IR) is an ultra-wideband system with attractive features for baseband asynchronous multiple access (MA), multimedia services, and tactical wireless communications. Implemented with analog components, the continuous-time IRMA model utilizes pulse-position modulation (PPM) and random time-hopping codes to alleviate multipath effects and suppress multiuser interference (MUI). We introduce a novel continuous-time PPM-IRMA model, deduce a low-complexity approximate one, and derive its discrete-time equivalent model. Relying on a time-division-duplex access protocol and orthogonal user codes, we design composite linear/non-linear receivers for the downlink. The linear step eliminates MUI deterministically and accounts for frequency-selective multipath while a maximum likelihood (ML) receiver achieves symbol detection.",
keywords = "Access protocols, Baseband, Downlink, Interference suppression, Maximum likelihood detection, Modulation coding, Multimedia systems, Pulse modulation, Ultra wideband technology, Wireless communication",
author = "{Le Martret}, {C. J.} and Giannakis, {G. B.}",
year = "2000",
month = jan,
day = "1",
doi = "10.1109/SAM.2000.877960",
language = "English (US)",
series = "Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop",
publisher = "IEEE Computer Society",
pages = "22--26",
booktitle = "Proceedings of the 2000 IEEE Sensor Array and Multichannel Signal Processing Workshop, SAME 2000",
note = "IEEE Sensor Array and Multichannel Signal Processing Workshop, SAME 2000 ; Conference date: 16-03-2000 Through 17-03-2000",
}